use of tools chs

PROPER USE OF TOOLS

OBJECTIVES• Use appropriate hand tools and test equipment

• Observe the proper use of hand tools.

ACTIVITY 1

• GIANT STEP• One representative per group. Participant will guess the name of the picture.

VIDEO PRESENTATION

ANSWER THE FOLLOWING QUESTIONS

• 1. What can you say about the video?

• 2. What the importance of learning the proper use of hand tools.

Proper Use of ESD Tools

• The purpose of an antistatic wrist strap is to equalizethe electrical charge between you and the equipment.The antistatic wrist strap is a conductor that connectsyour body to the equipment that you are working on.

ScrewsMatch each screw with the proper screwdriver. Place the tip of the screwdriver on the head of the screw. Turn the screwdriver clockwise to tighten the screw and counterclockwise toloosen the screw.

Flat head screwdriverUse a flat head screwdriver when you are working with a slotted screw. Do not use a flat head screwdriver to remove a Phillips head screw. Never use a screwdriver as a pry bar. If you cannot remove a component, check to see if there is a clip or latch that is securing the component in place.

Phillips head screwdriverUse a Phillips head screwdriver with crosshead screws. Do not use this type of screwdriverto puncture anything. This will damage the head of the screwdriver.

Hex driverUse a hex driver to loosen and tighten bolts that have a hexagonal (six-sided) head. Hex bolts should not be over-tightened because the threads of the bolts can be stripped. Do notuse a hex driver that is too large for the bolt that you are using.

Part retriever, Needle-nose pliers, or tweezers

The part retriever, needle-nose pliers, and tweezers can be used to place and retrieve partsthat may be hard to reach with your fingers. Do not scratch or hit any components whenusing these tools.

Proper Use of Cleaning MaterialsKeeping computers clean inside and out is a vital part of a maintenance program. Dirt cancause problems with the physical operation of fans, buttons, and other mechanicalcomponents. On electrical components, an excessive buildup of dust will act like an insulatorand trap the heat.

. This insulation will impair the ability of heat sinks and cooling fans to keepcomponents cool, causing chips and circuits to overheat and fail.

CAUTION: When compressed air is used to clean inside the computer, the air should beblown around the components with a minimum distance of four inches from the nozzle.

Thepower supply and the fan should be cleaned from the back of the case.CAUTION: Before cleaning any device, turn it off and unplug the device from the powersource.

Computer Cases and MonitorsClean computer cases and the outside of monitors with a mild cleaning solution on a damp,lint-free cloth. Mix one drop of dishwashing liquid with four ounces of water to create thecleaning solution. If any water drips inside the case, allow enough time for the liquid to drybefore powering on the computer.

LCD ScreensDo not use ammoniated glass cleaners or any other solution on an LCD screen, unless thecleaner is specifically designed for the purpose. Harsh chemicals will damage the coating onthe screen. There is no glass protecting these screens, so be gentle when cleaning themand do not press firmly on the screen.

CRT ScreensTo clean the screens of CRT monitors, dampen a soft,clean, lint-free cloth with distilled water and wipe thescreen from top to bottom. Then use a soft, dry cloth towipe the screen and remove any streaking after you havecleaned the monitor.

Component ContactsClean the contacts on components with isopropyl alcohol. Do not use rubbing alcohol.Rubbing alcohol contains impurities that can damage contacts. Make sure that the contacts do not collect any lint from the cloth or cotton swab. Blow any lint off the contacts with compressed air before reinstallation.

KeyboardClean a desktop keyboard with compressed air or a small, hand-held vacuum cleaner with a brush attachment.

MouseUse glass cleaner and a soft cloth to clean the outside of the mouse. Do not spray glass cleaner directly on the mouse. If cleaning a ball mouse, you can remove the ball and clean it with glass cleaner and a soft cloth. Wipe the rollers clean inside the mouse with the samecloth. Do not spray any liquids inside the mouse.

THANK YOU!